We specialize in High Cycle Fatigue (HCF) test of engine blades made with a service life limit analysis goal for our aerospace testing customers.
High vibration conditions of the blades during operation can affect the structural integrity of a test sample that makes the HCF test indispensable. The individual metallic and future advanced material turbine blades or segments of a bladed disc are tested in the natural resonance frequency range up to the beginning of the crack. Our equipment allows us to run multiple cycles in a very short time by simulating the service life of a component. Our portfolio of HCF testing services also includes the ability to perform strain gauge calibration on instrument wings.
Exciting high frequencies of larger and relatively hard samples require more specialized test methods, especially for higher modes. To do this, we installed special chopped air testing facilities using a pulsed air flow for aerodynamic stimulation. This first-class and unique capability allows EUROLAB to handle everything from the smallest to largest aeroengine FAN Blades in service today.
For analysis of service life limits, individual turbine blades or segments of a bladed disc are tested in the natural resonance frequency range until a crack occurs. In addition, turbine blades are subjected to a realistic temperature load up to 1200 ° C, for example to take into account creep processes.
Depending on the type of air foil, different compression conditions may occur, which must be considered for the HCF test to remember these effects on system behavior and to select the appropriate stimulation method.
Determining the behavior of a component in terms of post-excitation response characteristics is necessary to specify whether it can meet operating requirements. With this specific analysis, eigen frequencies and damping factors can be obtained and used before the HCF test to identify the relevant modifications in various frequencies, node models and / or finite element method (FEM) simulations.
How pre-damaged components react during fatigue is crucial when evaluating their operational flexibility. This has traditionally been tested using manual hammer impact techniques. Our specialists have created a new, more modern method that enables repeatability and more precise effects (eg exact position, notch depth and angle). This allows us to compare the results of multiple sets tested.
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EUROLABreporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK) ve Enterprise Accreditation Foundation (EAF) based on the accreditation provided by the accreditation body. The Enterprise Accreditation Foundation (EAF) accreditation body is also a signatory of the United Nations (UN GLOBAL COMPACT) organization.
